Prosecution Insights
Last updated: October 27, 2026

Yan Xiao, USPTO Patent Examiner

Listed by the USPTO as XIAO, YAN

Tech Center 1600 • Art Units: 1642 1644

This examiner grants 67% of resolved cases

Analysis

XIAO, YAN handles work in tech center 1600 and art unit 1642. The profile covers 770 resolved cases and shows a 67.3% allowance rate. The median time to allowance is 1071 days, giving applicants a substantial record for assessing prosecution timing.

The interview lift is 52.7%, indicating that interviews have a strong measured association with allowance in this record. The leading companies are Chineo Medical Technology Co. Ltd., Janssen Pharmaceuticals Inc., and The Regents of the University of California. The leading firms are Leber IP Law, BAKER BOTTS L.L.P., and BANNER & WITCOFF, LTD.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

67.3%
Allow Rate
+7.3% vs TC avg
807
Total Applications
+52.7%
Interview Lift
1071
Avg Prosecution Days
Based on 770 resolved cases, 2023–2026

Rejection Statute Breakdown

4.8%
§101 Eligibility
18.7%
§102 Novelty
26.4%
§103 Obviousness
27.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18704191 OPTIMIZING IMMUNOSUPPRESSION IN TRANSPLANT PATIENTS USING PERSONALIZED PHENOTYPIC DOSING MODEL Non-Final OA THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
18286471 ANTI-C1s ANTIBODY Non-Final OA Chugai Seiyaku Kabushiki Kaisha
18604709 TRANSGLUTAMINASE CONJUGATION METHOD AND LINKER Non-Final OA Paul Scherrer Institut
18500799 BISPECIFIC ANTIBODY AGAINST CD3 AND CD20 IN COMBINATION THERAPY FOR TREATING DIFFUSE LARGE B-CELL LYMPHOMA Non-Final OA GENMAB A/S

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Frequently Asked Questions

What is examiner Yan Xiao's allowance rate?

67.3% of resolved applications examined by Yan Xiao were allowed (770 resolved cases), compared with 38.5% across Art Unit 1642 over the last five years.

Does an interview help with examiner Yan Xiao?

This examiner's interview lift is +52.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Yan Xiao take to allow a patent?

Applications allowed by Yan Xiao took 1,071 days on average from filing to allowance.

Which art unit does examiner Yan Xiao work in?

Yan Xiao examines applications in Art Unit 1642 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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